STRUCTURAL AND MECHANICAL CHARACTERIZATION OF SPARK PLASMA SINTERED TUNGSTEN

1 ČECH Jaroslav
Co-authors:
1 HAUŠILD Petr 1,2 KOCMANOVÁ Lenka 2 MATĚJÍČEK Jiří
Institutions:
1 Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Prague, Czech Republic, EU, cechjar2@fjfi.cvut.cz
2 Institute of Plasma Physics, Prague, Czech Republic, EU, jmatejic@ipp.cas.cz
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1411-1416
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
42 views / 8 downloads
Abstract

The main objective of this paper is to describe the microstructure and mechanical properties of spark plasma sintered tungsten. The indentation tests, which are very advantageous because of their semi-nondestructive character and low requirements on the volume of investigated material, were carried out using Berkovich and spherical indenters. Indentation techniques with spherical indenters are less frequently used than those with sharp indenters but they offer variation of strain with the indentation depth and, therefore, they could be used for determination of stress-strain curves. Local stress-strain behavior obtained by this method showed good correspondence with the results of compression tests. Observation of the microstructure and the fracture surfaces helped to explain some phenomena which occurred during the mechanical testing.

Keywords: tungsten, SPS, instrumented indentation, stress-strain curve

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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